Tablet Protective Casing With Screw-Fastened Replaceable Film
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Solution Overview
Problem
Existing tablet electronic device protective casings with transparent protective films are wasteful as they require replacement of the entire casing when only the film is damaged, despite other parts being undamaged.
Innovation Solution
A replaceable electronic device protecting casing design with a transparent protective film attached via a waterproof strip and secured by screwing units, allowing easy replacement of the film without discarding the entire casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the transparent protective film is made from plastic material, then it provides basic protection and transparency, but it becomes fragile and prone to wear, scratching, and damage
Solution Approach 1:
The protective casing is divided into separate components: the front covering pressure plate, the transparent protective film, and the back seat. This segmentation allows the fragile film to be replaced independently without discarding the entire casing structure, resolving the contradiction by maintaining transparency while addressing durability through replaceability.
Solution Approach 2:
The design enables selective discarding and recovery of only the damaged transparent protective film while retaining and reusing the intact front covering pressure plate and back seat. This resolves the contradiction by allowing the fragile component to be discarded when damaged, while recovering and reusing the durable structural components.
2Reliability
If the transparent protective film is damaged, then the protective function is compromised, but discarding the entire protective casing is wasteful since other parts are not damaged
Solution Approach 1:
The protective casing is segmented into replaceable and non-replaceable components. The transparent protective film is designed as a separate, replaceable layer that can be removed and replaced independently from the front covering pressure plate and back seat, enabling selective replacement of only the damaged portion and avoiding waste of intact components.
Solution Approach 2:
The design implements selective discarding of only the damaged transparent protective film while recovering and reusing the undamaged structural components (front covering pressure plate and back seat). This resolves the contradiction by maintaining protective function through film replacement while minimizing substance loss through component recovery.
3Ease of manufacture
If the transparent protective film is glued to the outer frame to form an integrated structure, then assembly is simple, but replacement of the film requires discarding the entire casing
Solution Approach 1:
The protective film is segmented from the outer frame structure through the use of screwing units that allow independent removal. The film is positioned between the front covering pressure plate and back seat, secured by screws that pass through holes in both plates and the film, enabling simple replacement of the film without removing the entire casing assembly.
Solution Approach 2:
The transparent protective film is extracted as a separate, removable component from the integrated structure. By using screwing units instead of permanent bonding, the film can be easily taken out and replaced independently, resolving the contradiction between assembly simplicity and repairability.
4Ease of repair
If screwing units are used to assemble the front covering pressure plate, transparent protective film, and back seat, then the structure becomes more complex, but the transparent protective film becomes replaceable
Solution Approach 1:
The protective casing is segmented into modular components connected by screwing units. The front covering pressure plate, transparent protective film, and back seat are assembled using screws that pass through aligned holes, creating a segmented structure that is slightly more complex but enables easy disassembly and replacement of the film without requiring complex tools or procedures.
Data Source
AI summary
A replaceable electronic device protecting casing includes a front covering pressure plate having an outer frame; a plurality of first screwing holes arranged around the outer frame; a transparent protective film installed in an inner side of a hollow portion of the outer frame; a plurality of second screwing holes arranged around an outer side of the transparent protective film; a waterproof strip attached on an inner side of the transparent protective film; a back seat including a seat body forming a frame body; a plurality of third screwing holes arranged around the frame body; a plurality of screwing units installed in the first screwing holes; and wherein each of the screwing units passes through a respective one first screwing hole, a respective one second screwing hole and a respective one third screwing hole to assemble the front covering pressure plate, the transparent protective film and the back seat.